The model 272 three-phase current unbalance detector monitors three-phase lines to detect an unbalanced current. It can also monitor three separate single-phase lines for equal current levels.


When ground fault occurs, there will be imbalance in the phase currents and ground fault current flows through the neutral or ground cable.


Need to measure power and energy on a medium voltage system? Think your only choice is to use fully rated current transformer?


Thank you for being the best vendor!

Hi Teri, I wanted to take some time and pay a much overdue compliment to Flex-Core, specifically Corey, Irene, Randy and Arthur. Corey and Irene have patiently corrected the countless times our PO’s are submitted with an incorrect address. Also Energy has several open PO’s that are scheduled to be delivered at later dates (some… Read more “Thank you for being the best vendor!”

Why Choose Flex-Core®

Flex-Core manufactures and warehouses a large selection of technical products for measurement, monitoring, and control of current, power, and energy applications.

  • Large in-stock supply of current monitoring & measurement products.
  • Same day shipping available when ordered before 3:00PM Eastern.
  • Shortest lead time available for build-to-order requirements.
  • Custom ratios available.
  • Abundant warehouse stock of complementary catalog items ready for shipment.

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Specialists in Measuring, Monitoring and Control of Current, Power & Energy

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